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Method, equipment and system for transmitting demodulation reference signal (RMRS)

A technology of demodulation pilot and modulation coding method, which is applied in the field of transmission method of demodulation pilot, can solve the problems of DMRS signal interference enhancement, data detection performance degradation, etc., and achieve the effect of improving detection performance and reducing interference

Active Publication Date: 2011-11-09
HUAWEI TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventor found that because the retransmission uses the same time division, frequency division, code division or space division multiplexing method to allocate resource blocks as in the initial transmission, the interference between DMRS signals of adjacent cells on some resource blocks increases, resulting in a decrease in data detection performance

Method used

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  • Method, equipment and system for transmitting demodulation reference signal (RMRS)
  • Method, equipment and system for transmitting demodulation reference signal (RMRS)
  • Method, equipment and system for transmitting demodulation reference signal (RMRS)

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Embodiment Construction

[0040] figure 1 It is a flowchart of a demodulation pilot transmission method according to an embodiment of the present invention. This example includes

[0041] Step 101, if the total number of transmission layers of the data to be sent is less than or equal to the first threshold, select the first resource block; if the total number of transmission layers of the data to be sent is greater than the first threshold, select the first resource block and the first resource block Two resource blocks;

[0042] Step 102, at the first moment, send the above-mentioned data to be sent, and send the demodulation pilot DMRS of the above-mentioned data to be sent in the selected resource block;

[0043] Step 103, receiving feedback information indicating data transmission failure;

[0044] Step 104, if the total number of transmission layers of the data that failed to be sent is less than or equal to the first threshold, select the above-mentioned second resource block;

[0045] Step ...

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Abstract

The embodiment of the invention discloses a method, equipment and system for transmitting a demodulation reference signal (RMRS). The method comprises the following steps of: selecting a first resource block if the total transmission layer number of data to be transmitted is smaller than or equal to a first threshold value, and selecting a first resource block and a second resource block if the total transmission layer number of the data to be transmitted is larger than the first threshold value; at a first moment, transmitting the data to be transmitted and transmitting a DMRS of the data to be transmitted on the selected resource block; receiving feedback information indicating failed data transmission; if the total transmission layer number of the data failed to be transmitted is smaller than or equal to the first threshold value, selecting the second resource block; and at the second moment, retransmitting the data failed to be transmitted and transmitting the DMRS of the retransmitted data on the second resource block. Due to the adoption of the embodiment of the invention, the interference between the DMRSs on the partial resource blocks of adjacent cell parts is reduced, and the detection performance of data of the receiving end is improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to a demodulation pilot transmission method, device and system. Background technique [0002] In new wireless communication systems, MIMO technology is used to transmit data. For data at different transmission layers, there are correspondingly different demodulation pilot DMRSs, which are used to allow the receiving end to demodulate the data. The system will allocate resource blocks for the DMRS used by the data of each transmission layer according to a specific time-division, frequency-division, code-division or space-division multiplexing method, and send them together with the data. If a part of data on the transport layer fails to be sent, this part of data needs to be retransmitted, and the retransmission of this part of data corresponds to the DMRS used. At this time, resource blocks are also assigned to send DMRS according to the abov...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/16H04W28/06H04W28/16
Inventor 李洋周永行
Owner HUAWEI TECH CO LTD
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